package com.itstu.gulimall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.itstu.common.constant.ProductConstant;
import com.itstu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.itstu.gulimall.product.dao.AttrGroupDao;
import com.itstu.gulimall.product.dao.CategoryDao;
import com.itstu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.itstu.gulimall.product.entity.AttrGroupEntity;
import com.itstu.gulimall.product.entity.CategoryEntity;
import com.itstu.gulimall.product.service.CategoryService;
import com.itstu.gulimall.product.vo.AttrGroupRelationVo;
import com.itstu.gulimall.product.vo.AttrRespVo;
import com.itstu.gulimall.product.vo.AttrVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itstu.common.utils.PageUtils;
import com.itstu.common.utils.Query;

import com.itstu.gulimall.product.dao.AttrDao;
import com.itstu.gulimall.product.entity.AttrEntity;
import com.itstu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {
    @Resource
    AttrAttrgroupRelationDao relationDao;
    @Resource
    AttrGroupDao attrGroupDao;
    @Resource
    CategoryDao categoryDao;
    @Resource
    CategoryService categoryService;


    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    @Transactional
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        // 保存基本数据
        this.save(attrEntity);
        // 保存关联关系
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null){
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(relationEntity);
        }

    }

//    @Override
//    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
//        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type","base".equalsIgnoreCase(type)? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
//        if (catelogId != 0){
//            queryWrapper.eq("catelog_id",catelogId);
//        }
//        String key = (String) params.get("key");
//        if (!StringUtils.isEmpty(key)){
//            queryWrapper.and((wrapper)->{
//                wrapper.eq("attr_id",key).or().like("attr_name",key);
//                    });
//        }
//        IPage<AttrEntity> page = this.page(
//                new Query<AttrEntity>().getPage(params),
//                queryWrapper
//        );
//        PageUtils pageUtils = new PageUtils(page);
//        List<AttrEntity> records = page.getRecords();
//        List<AttrRespVo> attrRespVos = records.stream().map((attrEntity) -> {
//            AttrRespVo attrRespVo = new AttrRespVo();
//            BeanUtils.copyProperties(attrEntity, attrRespVo);
//            // 设置分类和分组的名字
//            if ("base".equalsIgnoreCase(type)){
//                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
//                if (attrId != null && attrId.getAttrGroupId() != null) {
//                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
//                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
//                }
//            }
//
//            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
//            if (categoryEntity != null) {
//                attrRespVo.setCatelogName(categoryEntity.getName());
//            }
//            return attrRespVo;
//        }).collect(Collectors.toList());
//        pageUtils.setList(attrRespVos);
//        return pageUtils;
//    }
@Override
public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
    QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type","base".equalsIgnoreCase(type)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

    if(catelogId != 0){
        queryWrapper.eq("catelog_id",catelogId);
    }

    String key = (String) params.get("key");
    if(!StringUtils.isEmpty(key)){
        //attr_id  attr_name
        queryWrapper.and((wrapper)->{
            wrapper.eq("attr_id",key).or().like("attr_name",key);
        });
    }

    IPage<AttrEntity> page = this.page(
            new Query<AttrEntity>().getPage(params),
            queryWrapper
    );

    PageUtils pageUtils = new PageUtils(page);
    List<AttrEntity> records = page.getRecords();
    List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
        AttrRespVo attrRespVo = new AttrRespVo();
        BeanUtils.copyProperties(attrEntity, attrRespVo);

        //1、设置分类和分组的名字
        if("base".equalsIgnoreCase(type)){
            AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
            if (attrId != null && attrId.getAttrGroupId()!=null) {
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
            }

        }


        CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
        if (categoryEntity != null) {
            attrRespVo.setCatelogName(categoryEntity.getName());
        }
        return attrRespVo;
    }).collect(Collectors.toList());

    pageUtils.setList(respVos);
    return pageUtils;
}



    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrEntity attrEntity = this.getById(attrId);
        AttrRespVo attrRespVo = new AttrRespVo();
        BeanUtils.copyProperties(attrEntity,attrRespVo);
        // 1.设置分组信息
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){

            AttrAttrgroupRelationEntity relationEntity = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id ", attrId));
            if (relationEntity != null){
                attrRespVo.setAttrGroupId(relationEntity.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
                if (attrGroupEntity != null){
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }
//

        // 2. 设置分类信息

        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        attrRespVo.setCatelogPath(catelogPath);

        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity != null){
            attrRespVo.setCatelogName(categoryEntity.getName());
        }

        return attrRespVo;
    }

    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            // 修改分组关联
            this.updateById(attrEntity);
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());
            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            if (count > 0){
                relationDao.update(relationEntity,new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attr.getAttrId()));
            }else {
                relationDao.insert(relationEntity);
            }
        }


    }

    /**
     * 根据分组id 查找关联的所有属性
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));

        List<Long> attrIds = entities.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        if(attrIds == null || attrIds.size() == 0){
            return null;
        }
        Collection<AttrEntity> attrEntities = this.listByIds(attrIds);
        return (List<AttrEntity>) attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entities);
    }

    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2、当前分组只能关联别的分组没有引用的属性
        //2.1)、当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());

        //2.2)、这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        //2.3)、从当前分类的所有属性中移除这些属性；
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(attrIds!=null && attrIds.size()>0){
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        PageUtils pageUtils = new PageUtils(page);

        return pageUtils;
    }

    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        return baseMapper.selectSearchAttrIds(attrIds);
    }

}